# \[Solved\] TP-Link RE650: Adding a function to a button **URL:** \ **Category:** Installing and Using OpenWrt\ **Created:** [September 21, 2021, 6:20am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025 "2021-09-21T06:20:35Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![PrePeter](https://forum.openwrt.org/letter_avatar/prepeter/32/5_5575768a8748004e209b776fc1b2916d.png) [@PrePeter](https://forum.openwrt.org/u/PrePeter)\ **Post date:** [September 21, 2021, 6:20am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/1 "2021-09-21T06:20:36Z")
Hello everyone, I'm trying to add function to a button on my RE650 on OpenWrt 21.02. Reading [the wiki](https://openwrt.org/docs/guide-user/hardware/hardware.button) and [this post](https://forum.openwrt.org/t/toggle-led-with-push-button/71599/4) gave me some idea, but I didn't succeed so far. **/sys/kernel/debug/gpio** ``` gpiochip2: GPIOs 416-447, parent: platform/1e000600.gpio, 1e000600.gpio-bank2: gpiochip1: GPIOs 448-479, parent: platform/1e000600.gpio, 1e000600.gpio-bank1: gpiochip0: GPIOs 480-511, parent: platform/1e000600.gpio, 1e000600.gpio-bank0: gpio-498 ( |wps ) in hi IRQ gpio-499 ( |reset ) out hi ACTIVE LOW gpio-502 ( |blue:power ) out lo ACTIVE LOW gpio-503 ( |blue:wifi2g ) out lo ACTIVE LOW gpio-504 ( |blue:wifi5g ) out hi ACTIVE LOW gpio-505 ( |power ) in hi IRQ gpio-506 ( |red:wps ) out lo gpio-507 ( |blue:wps ) out lo gpio-508 ( |green:eth_act ) out hi ACTIVE LOW gpio-509 ( |green:eth_link ) out lo ACTIVE LOW gpio-510 ( |led ) in hi IRQ gpio-511 ( |reset ) in hi IRQ ``` So the button "led" seems to be known to the system. That's why I thought adding the following file and doing "chmod 755" could be enough, but no /root/buttonpress.test appears when pressing the button. **/etc/rc.button/led** ``` #!/bin/sh ["${ACTION}" = "released"] || exit 0 echo "pressed" > /root/buttonpress.test return 0 ``` Any help on this is very much appreciated! ---
**Author:** ![frollic](https://forum.openwrt.org/user_avatar/forum.openwrt.org/frollic/32/30113_2.png) [@frollic](https://forum.openwrt.org/u/frollic)\ **Post date:** [September 21, 2021, 6:38am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/2 "2021-09-21T06:38:32Z")
i'd probably put the file in /tmp/ just to make sure it's not an auth issue. ---
**Author:** ![PrePeter](https://forum.openwrt.org/letter_avatar/prepeter/32/5_5575768a8748004e209b776fc1b2916d.png) [@PrePeter](https://forum.openwrt.org/u/PrePeter)\ **Post date:** [September 21, 2021, 6:59am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/3 "2021-09-21T06:59:59Z")
Thank you for the suggestion, but unfortunately the same result. Do I have to restart / reload anything for the new button script in /etc/rc.button/ to be picked up? Also I keep reading about DTS (like in the above mentioned post) and don't know if I need to do further customization around that topic to make the button work... ---
**Author:** ![frollic](https://forum.openwrt.org/user_avatar/forum.openwrt.org/frollic/32/30113_2.png) [@frollic](https://forum.openwrt.org/u/frollic)\ **Post date:** [September 21, 2021, 7:01am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/4 "2021-09-21T07:01:17Z")
might also want to put an echo before the variable check, just to check if the script gets executed, at all. ---
**Author:** ![PrePeter](https://forum.openwrt.org/letter_avatar/prepeter/32/5_5575768a8748004e209b776fc1b2916d.png) [@PrePeter](https://forum.openwrt.org/u/PrePeter)\ **Post date:** [September 21, 2021, 7:03am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/5 "2021-09-21T07:03:39Z")
It doesn't. Still nothing with the following file in /etc/rc.button: ``` #!/bin/sh echo "pressed" > /tmp/buttonpress.test echo "${ACTION}" >> /tmp/buttonpress.test return 0 ``` ---
**Author:** ![psherman](https://forum.openwrt.org/letter_avatar/psherman/32/5_5575768a8748004e209b776fc1b2916d.png) [@psherman](https://forum.openwrt.org/u/psherman)\ **Post date:** [September 21, 2021, 7:07am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/6 "2021-09-21T07:07:30Z")
If you haven’t already read this, take a look at the [buttons hotplug tutorial](https://openwrt.org/docs/guide-user/hardware/hardware.button). ---
**Author:** ![PrePeter](https://forum.openwrt.org/letter_avatar/prepeter/32/5_5575768a8748004e209b776fc1b2916d.png) [@PrePeter](https://forum.openwrt.org/u/PrePeter)\ **Post date:** [September 21, 2021, 7:20am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/7 "2021-09-21T07:20:05Z")
I read the whole article but don't really understand what is being said about procd vs hotplug. It seems my device on 21.02 uses procd? I can find the following packages installed on my default installation: procd kmod-gpio-button-hotplug /etc/hotplug.d exists, but no subdir "button". ---
**Author:** ![pavelgl](https://forum.openwrt.org/user_avatar/forum.openwrt.org/pavelgl/32/33073_2.png) [@pavelgl](https://forum.openwrt.org/u/pavelgl)\ **Post date:** [September 21, 2021, 7:27am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/8 "2021-09-21T07:27:47Z")
The first script in the [preliminary steps](https://openwrt.org/docs/guide-user/hardware/hardware.button#preliminary_steps) will show you if the button name is really "led" and if there are detected any actions. ---
**Author:** ![PrePeter](https://forum.openwrt.org/letter_avatar/prepeter/32/5_5575768a8748004e209b776fc1b2916d.png) [@PrePeter](https://forum.openwrt.org/u/PrePeter)\ **Post date:** [September 21, 2021, 8:24am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/9 "2021-09-21T08:24:18Z")
Nice, thank you pavelgl. The hotplug-script worked and told me that the button was called "lights\_toggle" instead of "led". Creating /etc/rc.button/lights\_toggle and giving it execute permission worked as expected. I will post back with the complete script as soon as I've finished and tested it! ---
**Author:** ![PrePeter](https://forum.openwrt.org/letter_avatar/prepeter/32/5_5575768a8748004e209b776fc1b2916d.png) [@PrePeter](https://forum.openwrt.org/u/PrePeter)\ **Post date:** [September 21, 2021, 8:54am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/10 "2021-09-21T08:54:30Z")
This is what I came up with to toggle all LEDs. Thank you all for your help! **/etc/rc.button/lights\_toggle** ``` #!/bin/sh ["${ACTION}" = "released"] || exit 0 if ["$(cat /sys/class/leds/blue:power/brightness)" -eq 255]; then logger "Button 'lights_toggle' pressed, disabling LEDs" echo 0 > /sys/class/leds/blue:power/brightness echo "none" > /sys/class/leds/blue:wifi2g/trigger echo "none" > /sys/class/leds/blue:wifi5g/trigger echo "none" > /sys/class/leds/green:eth_link/trigger echo "none" > /sys/class/leds/green:eth_act/trigger else logger "Button 'lights_toggle' pressed, enabling LEDs" echo 255 > /sys/class/leds/blue:power/brightness echo "phy0tpt" > /sys/class/leds/blue:wifi2g/trigger echo "phy1tpt" > /sys/class/leds/blue:wifi5g/trigger # Ethernet port LEDs are configured in /etc/config/system, restore them by restarting service /etc/init.d/led restart fi return 0 ``` ---
**Author:** ![tmomas](https://forum.openwrt.org/letter_avatar/tmomas/32/5_5575768a8748004e209b776fc1b2916d.png) [@tmomas](https://forum.openwrt.org/u/tmomas)\ **Post date:** [September 21, 2021, 11:05am UTC](https://forum.openwrt.org/t/solved-tp-link-re650-adding-a-function-to-a-button/107025/11 "2021-09-21T11:05:27Z")
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